“For the word of God is living and powerful, and sharper than any two-edged sword, piercing even to the division of soul and spirit, and of joints and marrow, and is a discerner of the thoughts and intents of the heart.”
Hebrews 4:12

“Is not My word like a fire?” says the LORD, “And like a hammer that breaks the rock in pieces?” – Jeremiah 23:29.

“For the weapons of our warfare are not carnal but mighty in God for pulling down strongholds, casting down arguments and every high thing that exalts itself against the knowledge of God, bringing every thought into captivity to the obedience of Christ, and being ready to punish all disobedience when your obedience is fulfilled.” – 2 Corinthians 10:4-6.

“And take the helmet of salvation, and the sword of the Spirit, which is the word of God.” – Ephesians 6:17.

“Thus you also have those who hold the doctrine of the Nicolaitans (sexual immorality), which thing I hate. ‘Repent, or else I will come to you quickly and will fight against them with the sword of My mouth.'”
Revelation 2:15-16